| AZ31镁合金异步铸轧板的显微组织 |
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| 引用本文： | 赵虎,何良菊,李培杰. AZ31镁合金异步铸轧板的显微组织[J]. 中国有色金属学会会刊, 2011, 21(11): 2372-2377. DOI: 10.1016/S1003-6326(11)61022-4 |
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| 作者姓名： | 赵虎 何良菊 李培杰 |
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| 作者单位： | 清华大学新材料国际研发中心;清华大学机械工程系; |
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| 基金项目： | Project (2006BAE04B02) supported by the National Key Technology R&D Program during the 11th Five-Year Plan of China |
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| 摘 要： | 研究AZ31镁合金异步铸轧板坯沿厚度方向的显微组织分布。结果表明,板坯组织沿厚度方向具有较明显的不均匀性。在板坯的上表面附近存在较多的流线型变形带组织;在中心处观察不到变形带组织,枝晶臂较粗大;在板坯下表面附近枝晶组织较细密。板坯上表面附近的流线型变形带是由上、下铸轧辊表面线速度差产生的剪切应变而引起的。Al、Zn和Mn在枝晶晶界处发生偏聚,Si均匀分布在α-Mg固溶体内。
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| 关 键 词： | AZ31镁合金 异步铸轧 变形带 析出相 |
| 收稿时间： | 2010-11-24 |
Microstructure of asymmetric twin-roll cast AZ31 magnesium alloy |
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| ZHAO Hu,,HE Liang-ju,LI Pei-jie, . National Center of Novel Materials for International Research,Tsinghua University,Beijing ,China. Microstructure of asymmetric twin-roll cast AZ31 magnesium alloy[J]. Transactions of Nonferrous Metals Society of China, 2011, 21(11): 2372-2377. DOI: 10.1016/S1003-6326(11)61022-4 |
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| Authors: | ZHAO Hu HE Liang-ju LI Pei-jie . National Center of Novel Materials for International Research Tsinghua University Beijing China |
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| Affiliation: | ZHAO Hu1,2,HE Liang-ju1,LI Pei-jie1,2 1. National Center of Novel Materials for International Research,Tsinghua University,Beijing 100084,China,2. Department of Mechanical Engineering |
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| Abstract: | The microstructural distribution along thickness of asymmetric twin-roll cast AZ31 magnesium alloy slab was investigated. It was found that the microstructure along the thickness of the slab was significantly inhomogeneous. There were many deformed bands with flow form near the upper surface of twin-roll cast plate. Very few deformed bands could be seen in the central part of the plate where the dendrites were thick. Fine dendritic structures dominated near the lower surface of the twin-roll cast strip. It ... |
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| Keywords: | AZ31 magnesium alloy asymmetric twin-roll casting deformation bands precipitate |
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